It's harder than it seems.
Seams in armor, like chainmail and the kaftan can be difficult to work around, not to mention making a clean continuous chain feel. I tried a few days ago to change the mail mittens texture to the same color as most other chainmails and it was disastrous for the longest time. Color was corrected to be the same tone, but had millions of microscopic holes that showed up as shiny flecks. I had to spend 1-2 hours filling them in before it looked anywhere close to decent.
Then there is making 3D modeling... Ho' Lord... as a side hobby I make 3D models for a game my cousin is making. It's at best tedious work that requires a lot of scrutiny to get the right look and feel.
Animating? That's a whole new process I'd love to avoid. I usually just pass the project off at this point to a friend who is much more skilled and patient than I for this part, because if it's not right, someones gonna let you know the hard way.